180338197 has 4 divisors (see below), whose sum is σ = 194210380. Its totient is φ = 166466016.

The previous prime is 180338149. The next prime is 180338203. The reversal of 180338197 is 791833081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36554116 + 143784081 = 6046^2 + 11991^2 .

It is a cyclic number.

It is not a de Polignac number, because 180338197 - 2⁷ = 180338069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180338117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6936072 + ... + 6936097.

It is an arithmetic number, because the mean of its divisors is an integer number (48552595).

Almost surely, 2^180338197 is an apocalyptic number.

It is an amenable number.

180338197 is a deficient number, since it is larger than the sum of its proper divisors (13872183).

180338197 is a wasteful number, since it uses less digits than its factorization.

180338197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13872182.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 180338197 is about 13429.0058083240. The cubic root of 180338197 is about 564.9750133832.

It can be divided in two parts, 1803 and 38197, that added together give a square (40000 = 200²).

The spelling of 180338197 in words is "one hundred eighty million, three hundred thirty-eight thousand, one hundred ninety-seven".